CN106025745B - A kind of electrographite brush and preparation method thereof - Google Patents
A kind of electrographite brush and preparation method thereof Download PDFInfo
- Publication number
- CN106025745B CN106025745B CN201610509269.1A CN201610509269A CN106025745B CN 106025745 B CN106025745 B CN 106025745B CN 201610509269 A CN201610509269 A CN 201610509269A CN 106025745 B CN106025745 B CN 106025745B
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- China
- Prior art keywords
- pitch
- electrographite brush
- molten mass
- parts
- electrographite
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
- H01R39/22—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The present invention discloses a kind of electrographite brush, is made of raw material from the following weight: 10-60 parts of graphite, 20-40 parts of pitch, 10-30 parts of pitch based graphite alkene.Preparation step is as follows: 1) heating, under nitrogen or inert gas shielding, pitch is heated to obtain molten mass, and the constant temperature at 500 DEG C；2) it is pyrolyzed, molten mass is heated to 1500 DEG C, and constant temperature 0.1-1 hours with 10 DEG C of heating rates per minute；3) 1500 DEG C of molten mass is heated to 3300 DEG C, and constant temperature 1-3 minutes with 100 DEG C of heating rates per minute by graphite alkylene；4) cooling, oscillation treatment is carried out to molten mass with ultrasonic wave in cooling procedure, and a certain amount of asphalt mixing is added when the temperature of molten mass drops to 400 DEG C or less；5) electrographite brush green body is made in solidification sintering.It is simple to prepare electrographite brush, preparation process that the present invention directlys adopt pitch, and not only fretting wear is small for electrographite brush obtained, but also improves the commutation ability of electrographite brush, reduces the resistivity of electrographite brush.
Description
Technical field
The present invention relates to brush technique fields more particularly to a kind of electrographite brush and preparation method thereof.
Background technique
Brush is to do sliding contact with movement parts and form a kind of conductive component being electrically connected, and is commonly used in commutator or cunning
On ring, as the sliding contact body for importing and exporting electric current.Almost all of direct current generator and commutating machine all use brush,
It is the important composition component of motor.
Commutation property is good, spark is small, coefficient of friction is small, low noise, makes because requiring in operation use for electric motor of automobile brush
It is all the emphasis that industry technology is broken through all the time with technical requirements such as service life length.Currently, market high-end product is always by foreign countries
Monopolization, researching and developing a kind of low resistivity, wearability and the excellent brush of commutation ability is technical problem urgently to be resolved in industry.
Summary of the invention
The electrographite brush that the purpose of the present invention is to provide a kind of resistivity is low, fretting wear is small, commutation property is good.
The present invention also provides a kind of preparation methods of electrographite brush.
To achieve the above objectives, the present invention adopts the following technical scheme that.
A kind of electrographite brush, which is characterized in that be made of raw material from the following weight: 10-60 parts of graphite, pitch 20-40
Part, 10-30 parts of pitch based graphite alkene.
As with improvement, the electrographite brush is made of raw material from the following weight: 30-40 parts of graphite, pitch 20-25
Part, 10-20 parts of pitch based graphite alkene.
As with improvement, the pitch is selected from coal tar pitch and petroleum asphalt, in slag oil asphalt, synthetic asphalts, mesophase pitch
It is one or several kinds of.
A kind of electrographite brush preparation method, which is characterized in that prepare electrographite brush as described above as follows:
1) it heats, under nitrogen or inert gas shielding, pitch is heated to obtain molten mass, and the constant temperature at 500 DEG C；
2) it is pyrolyzed, molten mass is heated to 1500 DEG C, and constant temperature 0.1-1 hours with 10 DEG C of heating rates per minute；
3) 1500 DEG C of molten mass is heated to 3300 DEG C, and constant temperature with 100 DEG C of heating rates per minute by graphite alkylene
1-3 minutes；
4) cooling, oscillation treatment is carried out to molten mass with ultrasonic wave in cooling procedure, and drop to 400 in the temperature of molten mass
DEG C or less when add a certain amount of asphalt mixing；
5) electrographite brush green body is made in solidification sintering.
As with improvement, in step 4) cooling procedure, by the way of segmented cooling, 1) by molten mass in 1 minute
Fast cooling is to 2500 DEG C, 2) molten mass is cooled to 400 DEG C with 150 DEG C of cooling rates per minute, 3) natural cooling.
As with improvement, in step 5) solidification sintering, using nitrogen as protective gas, 1-2 is sintered at 1100-1250 DEG C
Hour.
As with improvement, being sintered later in step 5) solidification further includes affixed conducting wire in green body obtained.
Compared with prior art, the beneficial effects of the present invention are:
It is simple to prepare electrographite brush, preparation process to directly adopt pitch, includes a certain amount of in electrographite brush obtained
The wear-resisting property of electrographite brush is greatly improved in graphene, and not only fretting wear is small, but also improves the commutation of electrographite brush
Can, the resistivity of electrographite brush is reduced, the generation of electric spark is reduced, avoids.
Detailed description of the invention
Fig. 1 show electrographite brush preparation flow figure provided by the invention.
Specific embodiment
Essence of the invention is more fully understood for convenience of those skilled in the art, with reference to the accompanying drawing to of the invention specific
Embodiment is described in detail.
Embodiment one
A kind of electrographite brush, which is characterized in that by 30 parts of graphite, 25 parts of pitch and 15 parts of pitch based graphite alkene system
At.The pitch is one of selected from coal tar pitch and petroleum asphalt, slag oil asphalt, synthetic asphalts, mesophase pitch or several.
As shown in Figure 1, it is specific the preparation method is as follows:
1) hot melt step1 heats pitch to obtain molten mass under nitrogen or inert gas shielding, and permanent at 500 DEG C
Temperature.
2) it is pyrolyzed step2, molten mass is heated to 1500 DEG C with 10 DEG C of heating rates per minute, and constant temperature 0.1-1 is small
When.
3) 1500 DEG C of molten mass is heated to 3300 DEG C with 100 DEG C of heating rates per minute by graphite alkylene step3,
And constant temperature 1-3 minutes, to generate the graphene of sufficient amount.
4) cooling step4 carries out oscillation treatment to molten mass with ultrasonic wave in cooling procedure, so that the graphite of generation, stone
Black alkene is dispersed in molten mass；And a certain amount of asphalt mixing is added when the temperature of molten mass drops to 400 DEG C or less.
5) solidification sintering step5, is made electrographite brush green body.
Wherein, in step 4) cooling procedure, by the way of segmented cooling, 1) by the fast prompt drop of molten mass in 1 minute
Temperature is to 2500 DEG C, 2) molten mass is cooled to 400 DEG C with 150 DEG C of cooling rates per minute, 3) natural cooling.It is dropped by segmentation
The mode of temperature is to ensure the final proportion of pitch, graphite and graphene.
In step 5) solidification sintering, using nitrogen as protective gas, it is sintered 1-2 hours at 1100-1250 DEG C.Solidifying
It further include affixed conducting wire in green body obtained after sintering.
Embodiment two
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 30 parts of graphite, 20 parts of pitch and 10 parts of pitch based graphite alkene.
Embodiment three
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 40 parts of graphite, 25 parts of pitch and 20 parts of pitch based graphite alkene.
Example IV
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 10 parts of graphite, 20 parts of pitch and 10 parts of pitch based graphite alkene.
Embodiment five
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 60 parts of graphite, 40 parts of pitch and 30 parts of pitch based graphite alkene.
Embodiment six
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 50 parts of graphite, 30 parts of pitch and 30 parts of pitch based graphite alkene.
Embodiment seven
A kind of electrographite brush provided in this embodiment, almost the same with embodiment one, difference is: the electrographite brush
It is made of 20 parts of graphite, 35 parts of pitch and 15 parts of pitch based graphite alkene.
The above specific embodiment is described in detail for the essence of the present invention, but can not be come with this to of the invention
Protection scope is limited.It should be evident that under the inspiration of the essence of the present invention, those of ordinary skill in the art can also be into
The many improvement and modification of row, it should be noted that these improvement and modification all fall in claims of the invention it
It is interior.
Claims (7)
1. a kind of electrographite brush preparation method, which comprises the steps of:
1) it heats, under nitrogen or inert gas shielding, pitch is heated to obtain molten mass, and the constant temperature at 500 DEG C；
2) it is pyrolyzed, molten mass is heated to 1500 DEG C, and constant temperature 0.1-1 hours with 10 DEG C of heating rates per minute；
3) 1500 DEG C of molten mass is heated to 3300 DEG C, and constant temperature 1-3 with 100 DEG C of heating rates per minute by graphite alkylene
Minute；
4) cooling, by the way of segmented cooling, first in 1 minute by molten mass fast cooling to 2500 DEG C, then with 150 DEG C
Molten mass is cooled to 400 DEG C by cooling rate per minute, last natural cooling, in cooling procedure with ultrasonic wave to molten mass into
Row oscillation treatment, and a certain amount of asphalt mixing is added when the temperature of molten mass drops to 400 DEG C or less；
5) electrographite brush green body is made in solidification sintering.
2. a kind of electrographite brush preparation method according to claim 1, which is characterized in that in step 5) solidification sintering,
Using nitrogen as protective gas, it is sintered 1-2 hours at 1100-1250 DEG C.
3. a kind of electrographite brush preparation method according to claim 1, which is characterized in that after step 5) solidification sintering
It further include affixed conducting wire in green body obtained.
4. a kind of electrographite brush preparation method according to claim 1, which is characterized in that the pitch is coal tar pitch, stone
One of oil asphalt, slag oil asphalt, synthetic asphalts, mesophase pitch are several.
5. a kind of electrographite brush, which is characterized in that utilize the electrographite brush preparation side as described in any one of claim 1-4
Method is made.
6. a kind of electrographite brush according to claim 1, which is characterized in that specifically include that graphite 10-60 by weight
Part, 20-40 parts of pitch, 10-30 parts of pitch based graphite alkene.
7. a kind of electrographite brush according to claim 1, which is characterized in that specifically include that graphite 30-40 by weight
Part, 20-25 parts of pitch, 10-20 parts of pitch based graphite alkene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509269.1A CN106025745B (en) | 2016-06-29 | 2016-06-29 | A kind of electrographite brush and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509269.1A CN106025745B (en) | 2016-06-29 | 2016-06-29 | A kind of electrographite brush and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106025745A CN106025745A (en) | 2016-10-12 |
| CN106025745B true CN106025745B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610509269.1A Active CN106025745B (en) | 2016-06-29 | 2016-06-29 | A kind of electrographite brush and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113872002A (en) * | 2021-10-20 | 2021-12-31 | 佛山市盈通黑金碳材料股份有限公司 | Preparation method of electric brush |
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|---|---|---|---|---|
| CN1469514A (en) * | 2002-06-06 | 2004-01-21 | ����̿����ʽ���� | Carbno brush |
| CN101651281A (en) * | 2008-08-11 | 2010-02-17 | 德昌电机(深圳)有限公司 | Graphite brush and preparation method thereof |
| CN102381701A (en) * | 2011-08-01 | 2012-03-21 | 福州大学 | Method for numerously preparing asphalt-based graphene material with low cost |
| CN102916318A (en) * | 2012-10-30 | 2013-02-06 | 江苏华宇碳素有限公司 | Carbon brush of motor of drum washing machine and method for manufacturing carbon brush |
| CN103072982A (en) * | 2013-02-28 | 2013-05-01 | 福州大学 | Low-cost asphalt-based graphene sheet and preparation method thereof |
| CN104901116A (en) * | 2015-05-18 | 2015-09-09 | 安徽一颗钉商贸有限公司 | Carbon brush used for low-abrasion motor and mixed with nanocopper and preparation method thereof |
| CN105480971A (en) * | 2016-01-29 | 2016-04-13 | 福州大学 | Preparation method of asphalt-based three-dimensional mesoporous graphene material |
-
2016
- 2016-06-29 CN CN201610509269.1A patent/CN106025745B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469514A (en) * | 2002-06-06 | 2004-01-21 | ����̿����ʽ���� | Carbno brush |
| CN101651281A (en) * | 2008-08-11 | 2010-02-17 | 德昌电机(深圳)有限公司 | Graphite brush and preparation method thereof |
| CN102381701A (en) * | 2011-08-01 | 2012-03-21 | 福州大学 | Method for numerously preparing asphalt-based graphene material with low cost |
| CN102916318A (en) * | 2012-10-30 | 2013-02-06 | 江苏华宇碳素有限公司 | Carbon brush of motor of drum washing machine and method for manufacturing carbon brush |
| CN103072982A (en) * | 2013-02-28 | 2013-05-01 | 福州大学 | Low-cost asphalt-based graphene sheet and preparation method thereof |
| CN104901116A (en) * | 2015-05-18 | 2015-09-09 | 安徽一颗钉商贸有限公司 | Carbon brush used for low-abrasion motor and mixed with nanocopper and preparation method thereof |
| CN105480971A (en) * | 2016-01-29 | 2016-04-13 | 福州大学 | Preparation method of asphalt-based three-dimensional mesoporous graphene material |
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| CN106025745A (en) | 2016-10-12 |
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Effective date of registration: 20230911 Address after: 528000 Factory Building (Workshop III) No. 2, Block 25-1-1-1, Fu'an Industrial Zone, Chonghe Village, Leliu Street, Shunde District, Foshan City, Guangdong Province (Residence Application) Patentee after: Foshan Yichong Chuangsheng Carbon Products Co.,Ltd. Address before: 528325 No. 3, Bai'an Road, Qijiao intensive industrial zone, Xingtan town, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN YINGTONG HEIJINTAN MATERIALS CO.,LTD. |
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